Windows only: Freeware application jZip, based on 7-Zip technology, creates and extracts archives with a click of a button. jZip supports RAR, TAR, ZIP, G-Zip, and other archive formats. Additionally, files can be encrypted with a passphrase for added security, and heavy archivers might find the shell integration feature handy.

Archiving and extracting is a breeze with jZip, and I was able to create a 360MB ZIP file in less than a minute. jZip also sports an interesting feature: the ability to view any file within an open archive with a desired application, such as WordPad for TXT files, for example. jZip is a free download for Windows only.